What is the main purpose of sustainable agriculture? a. to feed a growing world without damaging the ecosystem b. to produce cheap and abundant food at a high cost c. to increase farming efficiency and profits d. to rely heavily on mechanization, pesticides, and fertilizers

What could happen if two base pairs on a strand of dna or switched

Why does sexual reproduction result in more genetic variation in a species

Water changes bacteria in the soil converts this nutrient into a usable form. plants take up the usable nutrient through the soil and assimilate it into proteins, making it part of the plant. an animal eats the plants, and the nutrient becomes part of the animal. when the animal dies, it decomposes, returning the nutrient back to the soil. which cycle is being described? water cycle carbon cycle nitrogen cycle phosphorous cycle